How does oppofindx turn off the lift?

Find X holds up the camera and can automatically turn it off when it is turned off. Pixel:

3D front 25 million, rear16 million (main photo)+20 million (auxiliary photo)

Aperture: front aperture f/2.0, rear aperture16 million (f/2.0)+20 million (f/2.0).

Note: whether it is bright or dark, the main camera takes pictures, and the auxiliary camera only helps to blur the background.